JP2004257753A5 - - Google Patents

Download PDF

Info

Publication number
JP2004257753A5
JP2004257753A5 JP2003046100A JP2003046100A JP2004257753A5 JP 2004257753 A5 JP2004257753 A5 JP 2004257753A5 JP 2003046100 A JP2003046100 A JP 2003046100A JP 2003046100 A JP2003046100 A JP 2003046100A JP 2004257753 A5 JP2004257753 A5 JP 2004257753A5
Authority
JP
Japan
Prior art keywords
radio wave
signal
wave arrival
arrival direction
intermediate frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2003046100A
Other languages
Japanese (ja)
Other versions
JP2004257753A (en
JP3936918B2 (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2003046100A priority Critical patent/JP3936918B2/en
Priority claimed from JP2003046100A external-priority patent/JP3936918B2/en
Publication of JP2004257753A publication Critical patent/JP2004257753A/en
Publication of JP2004257753A5 publication Critical patent/JP2004257753A5/ja
Application granted granted Critical
Publication of JP3936918B2 publication Critical patent/JP3936918B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

図1は本発明に係る実施形態である電波到来方向探知装置の構成を示すブロック図である。この実施形態の電波到来方向探知装置は、図1に示すように、1つの励振素子A0と、6個の非励振素子A1乃至A6とを備えて構成され、特許文献1において開示された電子制御導波器アレーアンテナ装置(以下、アレーアンテナ装置という。)100と、無線受信機4と、電波到来方向探知コンピュータ20と、リアクタンス値コントローラ10とを備えている。電波到来方向探知コンピュータ20は、例えばディジタル計算機で構成され、第1の実施形態では、図6に示すように、等価ウエイト行列を校正して計算する処理(ステップS1)を実行した後、例えば非特許文献1などにおいて開示されたMUSICアルゴリズムを用いて方位角推定処理(ステップS2)を実行することにより電波到来方向を推定して出力し、また、第2の実施形態では、図7に示すように、周波数偏差補償法を用いて等価ウエイト行列を校正して計算する処理(ステップS11)を実行した後、上記MUSICアルゴリズムを用いて方位角推定処理(ステップS12)を実行することにより電波到来方向を推定して出力することを特徴としている。 FIG. 1 is a block diagram showing the configuration of a radio wave arrival direction detection apparatus according to an embodiment of the present invention. As shown in FIG. 1, the radio wave arrival direction detecting device of this embodiment is configured to include one excitation element A0 and six non-excitation elements A1 to A6, and the electronic control disclosed in Patent Document 1 A waveguide array antenna device (hereinafter referred to as an array antenna device) 100, a radio receiver 4, a radio wave arrival direction detection computer 20, and a reactance value controller 10 are provided. The radio wave arrival direction detection computer 20 is constituted by, for example, a digital computer, and in the first embodiment, as shown in FIG. 6, after performing the process (step S1) of calibrating and calculating the equivalent weight matrix By performing azimuth angle estimation processing (step S2) using the MUSIC algorithm disclosed in Patent Document 1 etc., the radio wave arrival direction is estimated and output, and in the second embodiment, as shown in FIG. After performing the process (step S11) of calibrating the equivalent weight matrix using the frequency deviation compensation method (step S11), the azimuth angle estimation process (step S12) is performed using the above-mentioned MUSIC algorithm, and the radio wave arrival direction is obtained. It is characterized in that it estimates and outputs.

図1のアレーアンテナの制御装置において、アレーアンテナ装置100は無線信号u(t)を受信し、上記受信された無線信号である受信信号y(t)は、励振素子A0に接続された同軸ケーブル9から出力される。出力された受信信号y(t)は、無線受信機4の低雑音増幅器1を介してダウンコンバータ2に入力され、ダウンコンバータ2は入力される受信信号を所定の中間周波数の中間周波信号に周波数変換した後、A/D変換器3に出力する。A/D変換器3は、入力されるアナログの中間周波信号をディジタルの中間周波信号に変換した後、電波到来方向探知コンピュータ20に出力する。さらに、電波到来方向探知コンピュータ20は、入力される中間周波信号(簡単化のために、受信信号y(t)として表記する。)に基づいて、送信側と同一のシーケンス信号を発生するシーケンス信号発生器22からのシーケンス信号(図4又は図5を参照。)と受信信号中のシーケンス信号との相関行列を計算して、受信された無線信号の到来角を計算し、その結果をCRTディスプレイ31に出力して表示する。ここで、電波到来方向探知コンピュータ20は、第1の実施形態では、図6に示すように、等価ウエイト行列を校正して計算する処理(ステップS1)を実行した後、例えば非特許文献1などにおいて開示されたMUSICアルゴリズムを用いて方位角推定処理(ステップS2)を実行することにより電波到来方向を推定して、電波到来角度の推定結果をCRTディスプレイ21に出力して表示し、また、第2の実施形態では、図7に示すように、周波数偏差補償法を用いて等価ウエイト行列を校正して計算する処理(ステップS11)を実行した後、上記MUSICアルゴリズムを用いて方位角推定処理(ステップS12)を実行することにより電波到来方向を推定して、電波到来角度の推定結果をCRTディスプレイ21に出力して表示する。

In the controller of the array antenna of FIG. 1, the array antenna apparatus 100 receives a radio signal u (t), and the received signal y (t) which is the received radio signal is a coaxial cable connected to the excitation element A0. Output from 9 The output received signal y (t) is input to the down converter 2 through the low noise amplifier 1 of the wireless receiver 4, and the down converter 2 converts the input received signal into an intermediate frequency signal of a predetermined intermediate frequency. After conversion, the signal is output to the A / D converter 3. The A / D converter 3 converts the input analog intermediate frequency signal into a digital intermediate frequency signal, and outputs the digital intermediate frequency signal to the radio wave arrival direction detection computer 20. Furthermore, the radio wave arrival direction detection computer 20 generates a sequence signal that generates the same sequence signal as that on the transmission side based on the input intermediate frequency signal (represented as the reception signal y (t) for simplicity). The correlation matrix between the sequence signal (see FIG. 4 or 5) from the generator 22 and the sequence signal in the received signal is calculated, the angle of arrival of the received radio signal is calculated, and the result is displayed on the CRT display. Output to 31 and display. Here, in the first embodiment, as shown in FIG. 6, after the radio wave arrival direction detection computer 20 executes the process (step S1) of calibrating and calculating the equivalent weight matrix, for example, non-patent document 1 etc. By performing azimuth angle estimation processing (step S2) using the MUSIC algorithm disclosed in the above, and estimating the radio wave arrival direction, and displaying the result of estimation of the radio wave arrival angle on the CRT display 21, and In the second embodiment, as shown in FIG. 7, after performing the process (step S11) of calibrating and calculating the equivalent weight matrix using the frequency deviation compensation method, the azimuth angle estimation process (the above-mentioned MUSIC algorithm is performed) By performing step S12), the radio wave arrival direction is estimated, and the estimation result of the radio wave arrival angle is output to the CRT display 21 for display. That.

JP2003046100A 2003-02-24 2003-02-24 Radio wave arrival direction detection method and apparatus Expired - Fee Related JP3936918B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003046100A JP3936918B2 (en) 2003-02-24 2003-02-24 Radio wave arrival direction detection method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003046100A JP3936918B2 (en) 2003-02-24 2003-02-24 Radio wave arrival direction detection method and apparatus

Publications (3)

Publication Number Publication Date
JP2004257753A JP2004257753A (en) 2004-09-16
JP2004257753A5 true JP2004257753A5 (en) 2005-04-28
JP3936918B2 JP3936918B2 (en) 2007-06-27

Family

ID=33112744

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003046100A Expired - Fee Related JP3936918B2 (en) 2003-02-24 2003-02-24 Radio wave arrival direction detection method and apparatus

Country Status (1)

Country Link
JP (1) JP3936918B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006095584A1 (en) * 2005-03-09 2006-09-14 Pioneer Corporation Array antenna apparatus, directivity control method, and directivity control program
CN110907888A (en) * 2019-12-17 2020-03-24 哈尔滨工业大学(威海) Rapid polarization-DOA estimation method based on beam forming

Similar Documents

Publication Publication Date Title
US9182475B2 (en) Sound source signal filtering apparatus based on calculated distance between microphone and sound source
JP2007512762A5 (en)
JP2007512763A5 (en)
JP3918573B2 (en) Radar equipment
US20150331084A1 (en) Device and method for measuring position of electronic device
JP4294634B2 (en) Calibration table creation method and arrival direction estimation method
JP2006267036A (en) Interference wave suppressor
JP2004257753A5 (en)
JP4723916B2 (en) Radio wave source visualization apparatus and radio wave source visualization method
JP3867069B2 (en) Radio wave arrival direction detection method and apparatus
JP2007212648A (en) Visualizing device for radio wave emission source, and method therefor
US8953719B2 (en) Signal detector, signal detection method, and communication terminal apparatus
JP4015989B2 (en) Wave number estimation apparatus and wave number estimation method
WO2021131601A1 (en) Radar device
JP4247168B2 (en) Sound field characteristic measurement system
JP2014174093A (en) Incoming wave direction estimation device, radar device, sonar device, and method and program for estimating incoming wave direction
JP4439280B2 (en) DBF antenna system
JP6781505B2 (en) Displacement measuring device
JP4576742B2 (en) Transmission / reception frequency division multiplexing radio equipment
JP5063490B2 (en) Wireless communication system and wireless communication method
JP4686265B2 (en) Radio monitoring device
JP3928551B2 (en) Arrival wave estimation device, arrival wave estimation method, and wave source position estimation device
JP3777576B2 (en) Position estimation method and apparatus
JP2007174206A (en) Receiver equipment, and its received signal processing method
JP5874369B2 (en) Radar apparatus and detection method